Back in 2002, we said:

...In other words, when the front wheels turn left — to overtake another car, for instance — the rear wheels turn left also. The result is a swift, clean passing motion that seems to skate forward briskly. For towing situations, there's an even further refinement: counter-steering is reduced at lower speeds, while parallel steering is increased at higher speeds. You can consider Quadrasteer the robot equivalent of the fireman who steers from the rear of one of those long-trailered ladder trucks. Well, this changes everything... Read More